Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 1 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/25/2020   06:46:12   (   0.06, -75.19) (   0.85, -78.78)  408.95                80
 01/26/2020   06:24:37   (   0.06, -75.19) (  -0.18, -74.21)  112.60                80
 01/27/2020   18:48:56   (  -0.07, -75.20) (  -1.03, -79.43)  482.80                80
 01/28/2020   18:27:21   (  -0.07, -75.20) (   0.01, -74.86)   39.21                80
 01/31/2020   06:32:36   (   0.07, -75.22) (   0.13, -75.48)   30.28                80
 02/01/2020   06:11:00   (   0.07, -75.22) (  -0.90, -70.91)  492.14                80
 02/02/2020   18:35:20   (  -0.08, -75.25) (  -0.25, -76.15)  102.08                80
 02/03/2020   18:13:45   (  -0.08, -75.26) (   0.78, -71.57)  420.64                80
 02/05/2020   06:37:54   (   0.09, -75.27) (   0.45, -76.75)  170.44                80
 02/06/2020   06:16:19   (   0.09, -75.28) (  -0.58, -72.18)  352.30                80
 02/07/2020   18:40:39   (  -0.10, -75.30) (  -0.56, -77.42)  241.58                80